1 /*- 2 * Copyright (c) 2003 Mathew Kanner 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD: head/sys/dev/sound/midi/mpu401.c 193979 2009-06-11 09:06:09Z ariff $"); 29 30 #include <sys/param.h> 31 #include <sys/types.h> 32 #include <sys/queue.h> 33 #include <sys/kernel.h> 34 #include <sys/lock.h> 35 #include <sys/mutex.h> 36 #include <sys/proc.h> 37 #include <sys/systm.h> 38 #include <sys/kobj.h> 39 #include <sys/malloc.h> 40 #include <sys/bus.h> /* to get driver_intr_t */ 41 42 #ifdef HAVE_KERNEL_OPTION_HEADERS 43 #include "opt_snd.h" 44 #endif 45 46 #include <dev/sound/midi/mpu401.h> 47 #include <dev/sound/midi/midi.h> 48 49 #include "mpu_if.h" 50 #include "mpufoi_if.h" 51 52 #define MPU_DATAPORT 0 53 #define MPU_CMDPORT 1 54 #define MPU_STATPORT 1 55 #define MPU_RESET 0xff 56 #define MPU_UART 0x3f 57 #define MPU_ACK 0xfe 58 #define MPU_STATMASK 0xc0 59 #define MPU_OUTPUTBUSY 0x40 60 #define MPU_INPUTBUSY 0x80 61 #define MPU_TRYDATA 50 62 #define MPU_DELAY 2500 63 64 #define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d) 65 #define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT) 66 #define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT) 67 #define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d) 68 69 struct mpu401 { 70 KOBJ_FIELDS; 71 struct snd_midi *mid; 72 int flags; 73 driver_intr_t *si; 74 void *cookie; 75 struct callout timer; 76 }; 77 78 static void mpu401_timeout(void *m); 79 static mpu401_intr_t mpu401_intr; 80 81 static int mpu401_minit(struct snd_midi *, void *); 82 static int mpu401_muninit(struct snd_midi *, void *); 83 static int mpu401_minqsize(struct snd_midi *, void *); 84 static int mpu401_moutqsize(struct snd_midi *, void *); 85 static void mpu401_mcallback(struct snd_midi *, void *, int); 86 static void mpu401_mcallbackp(struct snd_midi *, void *, int); 87 static const char *mpu401_mdescr(struct snd_midi *, void *, int); 88 static const char *mpu401_mprovider(struct snd_midi *, void *); 89 90 static kobj_method_t mpu401_methods[] = { 91 KOBJMETHOD(mpu_init, mpu401_minit), 92 KOBJMETHOD(mpu_uninit, mpu401_muninit), 93 KOBJMETHOD(mpu_inqsize, mpu401_minqsize), 94 KOBJMETHOD(mpu_outqsize, mpu401_moutqsize), 95 KOBJMETHOD(mpu_callback, mpu401_mcallback), 96 KOBJMETHOD(mpu_callbackp, mpu401_mcallbackp), 97 KOBJMETHOD(mpu_descr, mpu401_mdescr), 98 KOBJMETHOD(mpu_provider, mpu401_mprovider), 99 KOBJMETHOD_END 100 }; 101 102 DEFINE_CLASS(mpu401, mpu401_methods, 0); 103 104 void 105 mpu401_timeout(void *a) 106 { 107 struct mpu401 *m = (struct mpu401 *)a; 108 109 if (m->si) 110 (m->si)(m->cookie); 111 112 } 113 static int 114 mpu401_intr(struct mpu401 *m) 115 { 116 #define MPU_INTR_BUF 16 117 MIDI_TYPE b[MPU_INTR_BUF]; 118 int i; 119 int s; 120 121 /* 122 kprintf("mpu401_intr\n"); 123 */ 124 #define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0) 125 #define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0) 126 #if 0 127 #define D(x,l) kprintf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"") 128 #else 129 #define D(x,l) 130 #endif 131 i = 0; 132 s = STATUS(m); 133 D(s, 1); 134 while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) { 135 b[i] = READ(m); 136 /* 137 kprintf("mpu401_intr in i %d d %d\n", i, b[i]); 138 */ 139 i++; 140 s = STATUS(m); 141 } 142 if (i) 143 midi_in(m->mid, b, i); 144 i = 0; 145 while (!(s & MPU_OUTPUTBUSY) && i < MPU_INTR_BUF) { 146 if (midi_out(m->mid, b, 1)) { 147 /* 148 kprintf("mpu401_intr out i %d d %d\n", i, b[0]); 149 */ 150 151 WRITE(m, *b); 152 } else { 153 /* 154 kprintf("mpu401_intr write: no output\n"); 155 */ 156 return 0; 157 } 158 i++; 159 /* DELAY(100); */ 160 s = STATUS(m); 161 } 162 163 if ((m->flags & M_TXEN) && (m->si)) { 164 callout_reset(&m->timer, 1, mpu401_timeout, m); 165 } 166 return (m->flags & M_TXEN) == M_TXEN; 167 } 168 169 struct mpu401 * 170 mpu401_init(kobj_class_t cls, void *cookie, driver_intr_t softintr, 171 mpu401_intr_t ** cb) 172 { 173 struct mpu401 *m; 174 175 *cb = NULL; 176 m = kmalloc(sizeof(*m), M_MIDI, M_WAITOK | M_ZERO); 177 178 kobj_init((kobj_t)m, cls); 179 180 callout_init_mp(&m->timer); 181 182 m->si = softintr; 183 m->cookie = cookie; 184 m->flags = 0; 185 186 m->mid = midi_init(&mpu401_class, 0, 0, m); 187 if (!m->mid) 188 goto err; 189 *cb = mpu401_intr; 190 return m; 191 err: 192 kprintf("mpu401_init error\n"); 193 kfree(m, M_MIDI); 194 return NULL; 195 } 196 197 int 198 mpu401_uninit(struct mpu401 *m) 199 { 200 int retval; 201 202 CMD(m, MPU_RESET); 203 retval = midi_uninit(m->mid); 204 if (retval) 205 return retval; 206 kfree(m, M_MIDI); 207 return 0; 208 } 209 210 static int 211 mpu401_minit(struct snd_midi *sm, void *arg) 212 { 213 struct mpu401 *m = arg; 214 int i; 215 216 CMD(m, MPU_RESET); 217 CMD(m, MPU_UART); 218 return 0; 219 i = 0; 220 while (++i < 2000) { 221 if (RXRDY(m)) 222 if (READ(m) == MPU_ACK) 223 break; 224 } 225 226 if (i < 2000) { 227 CMD(m, MPU_UART); 228 return 0; 229 } 230 kprintf("mpu401_minit failed active sensing\n"); 231 return 1; 232 } 233 234 235 int 236 mpu401_muninit(struct snd_midi *sm, void *arg) 237 { 238 struct mpu401 *m = arg; 239 240 return MPUFOI_UNINIT(m, m->cookie); 241 } 242 243 int 244 mpu401_minqsize(struct snd_midi *sm, void *arg) 245 { 246 return 128; 247 } 248 249 int 250 mpu401_moutqsize(struct snd_midi *sm, void *arg) 251 { 252 return 128; 253 } 254 255 static void 256 mpu401_mcallback(struct snd_midi *sm, void *arg, int flags) 257 { 258 struct mpu401 *m = arg; 259 #if 0 260 kprintf("mpu401_callback %s %s %s %s\n", 261 flags & M_RX ? "M_RX" : "", 262 flags & M_TX ? "M_TX" : "", 263 flags & M_RXEN ? "M_RXEN" : "", 264 flags & M_TXEN ? "M_TXEN" : ""); 265 #endif 266 if (flags & M_TXEN && m->si) { 267 callout_reset(&m->timer, 1, mpu401_timeout, m); 268 } 269 m->flags = flags; 270 } 271 272 static void 273 mpu401_mcallbackp(struct snd_midi *sm, void *arg, int flags) 274 { 275 /* kprintf("mpu401_callbackp\n"); */ 276 mpu401_mcallback(sm, arg, flags); 277 } 278 279 static const char * 280 mpu401_mdescr(struct snd_midi *sm, void *arg, int verbosity) 281 { 282 283 return "descr mpu401"; 284 } 285 286 static const char * 287 mpu401_mprovider(struct snd_midi *m, void *arg) 288 { 289 return "provider mpu401"; 290 } 291